Petrified Wood, Geodes, Crystals, Agate and Carvings

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Cost

Item Description

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$80.00

PR1000c   This is an exceptional piece of Sea Jasper from Madagascar. It has a gorgeous red color with tons of accents. It has a wonderful mix of colors with lots of "eyes" and neat crystal cavities! The unique piece was cut and polished on the front side leaving the rest in it's natural form in our own Lapidary department.  The  wonderful piece measures 7 3/8" x 6 3/8" x 2 5/8" thick and weighs nearly 4 1/4 pounds.  A truly different treasure.

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Jasper, or spotted stone, is an opaque, impure variety of Quartz that is usually red, yellow or brown in color.  Some Jaspers simultaneously exhibit several variants such as banding, flow patterns, dendrites or color variations.  This results in what appears to be scenes or images in a cut section of the Jasper.  

polished rock

Ocean Jasper Free Form

$75.00 PR1001b  Here is a unique treasure!  This is a beautiful single terminated Quartz crystal with very nice clarity and sparkly inclusions.  It measures over 4 1/8" x 2 1/4" x 2 5/8" and has a nice natural polish.  The tip has an indentation that is natural, likely where it was growing up against another crystal.  These Quartz Crystals don't photograph well to properly show the quality.  A definite must have for the polished rock collector.

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Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

polished rock

Smokey Quartz Crystal

$85.00

PR1002b   Here is a wonderful find!!  This is a very nice Brazilian Agate Geode.  It measures 5 1/4" x 5" x 4 1/2" and is highly polished on the face as well as as the complete outer surfaces. It has neat banding and unusual and cool cavity. A very nice conversation piece or a pretty display item.

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Geodes are geological rock formations which occur in sedimentary and certain volcanic rocks.  They are essentially rock cavities or vugs with internal Crystal formations or concentric banding.  The exterior is generally Limestone while the interior contains Quartz Crystals and/or Chalcedony deposits.  If the Geode is completely filled with Crystal, being solid all the way through, it is then called a nodule.

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 Brazilian Agate Geode

$60.00

PR1003b   Here is a very cool item!!  This is a very nice large Amethyst Crystal Point from Brazil.  It measures 3 1/8" wide x 3 1/4" x  4". It has a lovely  Purple color with fabulous inclusions and amazing "rainbow" reflections.  It has a high polish on all facets with the lower portion left in it's rough natural state.  A very nice conversation piece or a pretty display item.

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Amethyst is a purple variety of Quartz often used as an ornament.  It occurs in color from a light, slightly pinkish violet to a deep grape purple.  Upon exposure to heat, Amethyst generally becomes yellow, which some refer to as Citrine or "burnt" Amethyst.  It is widely distributed as a mineral, but fine, clear specimens that are suitable for cutting as ornamental stones.

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 Amethyst Crystal Point

$70.00

PR1004c   This is an exceptional quality Quartz Crystal and Calcite cluster from China.  This unbelievable example has tiny, very fragile clear Quartz crystals all over with White to pale Pink Calcite colored crystals with near perfect points.  The sparkly crystals all rest on a lovely unidentified Green matrix that gives it all an unmatched character.  This gorgeous piece measures 6" x 2 1/2" x 2 5/8". 

Pictures cannot do this exceptional piece justice but be sure to look at all of them - click on those to the right and linked below. Just an absolutely beautiful item. 

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Quartz is the second most common mineral in the Earth's continental crust.  It is mainly composed of Silica or Silica based minerals.  Although Quartz is known by a variety of names, the most important distinction between types of Quartz is that of macro-crystalline, individual crystals visible to the unaided eye, and micro-crystalline, where aggregates of crystals are only visible under high magnification.  There are many forms of Quartz including Chalcedony, Amethyst, Citrine, and Carnelian which are results of mineral impurities or heat treatments.

Calcite is a Carbonate mineral that is most widely distributed on the Earth's surface.  It is a common constituent of sedimentary rocks with Limestone in particular.  A Calcite formation can take on many different shapes and sizes which is dependent on the location, ground water occurrence and temperature.  Calcite is usually white or colorless but can be gray, red, yellow, green, blue, violet, brown or black.  The deeper the color is usually indicative of the definitive impurities from the earth or water.

crystal quartz

crystal quartz

Crystal Quartz Cluster

$8.00

PR1005b  One of the favorites of the Rock Shed returns!!!  Here is a larger, very good quality Selenite Massage Wand.  It measures approximately 6" long x 7/8" in diameter and has been hand polished.  Each end has a rounded smooth finish to prevent cuts or scrapes.  The larger size is easier to handle with either hand and works well with different hand sizes.

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Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are the four Crystalline varieties of Gypsum.  It is a very soft material composed of Calcium Sulfate.  Selenite is often transparent and colorless.  If color is present it is often due to impurities or presence of other minerals. 

selenite massage wand

Selenite Massage Wand

$150.00 PR1006c  This is a very pretty, above average quality, multi-colored Brazilian Agate slab.  It has been cut and highly polished to show the pretty colors in the banding and beautiful design on the inside. This exceptional Brazilian Agate slab has an awesome center with two sparkly crystal cavities surrounded by excellent banding.  The gorgeous agate slab is nearly 11 1/8" wide x 6 1/4" x 2" thick.  It makes for a very interesting display piece or would make an excellent gift.

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Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

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Brazilian Agate

$260.00 PR1007b  This is a great find!!  Here is an above average quality Black Moonstone Dish.  It measures 12 3/4" long x 5"x 2 3/4", weighs nearly 6 pounds and has a very good polish.  This exceptional dish has a fascinating color mix with a highly iridescent shine  and great "flash" of mostly gold (even on the unpolished back side). Just to mention the end tip of the dish has been left unpolished and is in it's natural state. This would make a great gift for the "hard to buy for" person.

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Moonstone is a typical Potassium Aluminum Silicate with several commonalities with the Feldspar family. It's name is derived from the visual effect or sheen that is caused by light reflecting internally and externally from the layer inclusions of different Feldspars. Moonstone is closely related to Sunstone, Labradorite and Sodalite.

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Black Moonstone Dish

$65.00 PR1008c   Here's  a very nice Mahogany Obsidian Obelisk  from Mexico. It has deep red to almost brown color and is darker than in the picture with a neat black spotted design. It's polished on all sides and measures 2 1/4" square at the base with 3/4" square at the top x 8 1/2" tall. A very nice piece to add class to any area of home or office.

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Obsidian is a type of naturally-occurring glass formed as an extrusive igneous rock.  It is produced when felsic lava erupted from a volcano, cools rapidly through the glass transition temperature and freezes without sufficient time for Crystal growth.  Because of the lack of Crystal structure, Obsidian blade edges can reach almost molecular thinness, leading to its ancient use of projectile points (arrow heads) and its modern use as surgical scalpel blades.

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Mahogany Obsidian Obelisk

$25.00 PR1009b  This is a nice, above average quality South Dakota Prairie Agate.   It measures 4 3/8" x 4" x nearly 1 1/2" and was polished on all sides here at the Rock Shed.  This cool Agate has lots of Prairie Agate banding with a pretty Yellowish Cream, Grey, Brown accent colors.  A nice display piece for your collection.  Very nice!

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Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

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SD Prairie Agate 

$150.00

PR1010c   This is a very nice Tee Pee Canyon Agate from Custer, South Dakota.   It measures 5 1/8" x  5" x  1/2" and is highly polished on both sides.  This gorgeous piece has excellent agate designs with exceptional banding in the various Red colors all on a earth tone background.  It has been cut and polished in the Rock Shed's own Lapidary department. This material is becoming more rare and we are grateful for the material we do have.  A stunning display piece for your collection.  Very beautiful!

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Click here to see more Fairburn and Prairie Agates

Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

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Tee Pee Canyon Agate

$35.00

PR1011b   This is a very pretty, larger desert Selenite specimen from Mexico. This specimen measures approximately 5 7/8" x 3 1/4" x 3 3/8".  This unusual piece has a soft Copper Brown color with a real unique shape.  A one of a kind gift for that one of a kind person.

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Selenite, also known as Satin Spar, Desert Rose and Gypsum Flower, are the four Crystalline varieties of Gypsum.  It is a very soft material composed of Calcium Sulfate.  Selenite is often transparent and colorless.  If color is present it is often due to impurities or presence of other minerals. 

selenite

Selenite Desert Rose

$70.00 PR1012c  Here is an above average quality specimen of Petrified Wood from Oregon in the northwestern Uunited States.  It has been highly polished on the top side and measures nearly 4 1/2" wide x 7 3/4" x 3 1/2" thick and weighs nearly 6 pounds.  The wood has a nice blend of Earth tone colors and has an interesting irregular shape and design.  This pretty Petrified Wood Slab is a very nice specimen for any collection.

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Click here to view more Petrified Wood specimens!

Petrified Wood is a type of a fossil as it consists of fossil wood where all the organic materials have been replaced with minerals while retaining the original structure of the wood.  These minerals are most often Silicates such as Quartz.  Other minerals, Manganese, Iron and Copper, in the water or mud during the petrification process give Petrified Wood a variety of color ranges: black - Carbon; green/blue - Copper; red/brown/yellow - Iron.  Petrified Wood can preserve the original structure of the wood in all its detail all the way down to the microscopic level.  Structures such as tree rings and the various tissues are often observed features.  Although Petrified Wood can be found worldwide, it is rather rare in larger quantities and at times can be difficult to obtain by the average collector.

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Petrified Wood

$75.00

PR1013c   Here is a lovely, high quality TeePee Canyon Agate from Custer, South Dakota.  It measures 7 1/2" x 4 3/4" x 2 3/8" thick and has a super TeePee Canyon Agate design. This pretty agate has very good, banding and a very nice mix of colors.  The agate has been highly polished  on the face to better show the gorgeous banding. Besides these becoming more rare and hard to find this particular one is one of the largest we have seen. Another fabulous creation from our Rock Shed Lapidary Department. Grab this one quick!

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Agates mostly occur as nodules in volcanic rocks or waters containing Silica in solution which is possibly derived from the decomposition of Silicates in the lava.  The Siliceous matter is deposited in regular layers resulting in the banded or striped formation.  It is very unlikely that you would ever find an exact duplicate of any type of Agate, Brazilian or other.

polished rock

Tee Pee Canyon Agate

$22.00

PR1014b   Here is a rare and interesting treasure!  This is a highly sought after Moldavite crystal with a unique shape.  It measures 5/8" x 1/2" x 1/4" weighs 1.86 grams and has a natural finish on the lovely dark green color. It comes in a display box that measures 1" square x 5/8" tall. It would make an excellent piece for wire wrapping for jewelry or just for your collection. 

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Moldavite is an olive-green or dull greenish vitreous substance possibly formed by a meteorite impact.  It is one kind of tektite found only in the Czech Republic. Moldavite is also known as the Grail Stone, as it is believed to have been the green stone in what is known as the Holy Grail.  During the Middle Ages, only those who were considered royalty or the highest nobility, wore jewelry fashioned out of moldavite.  Moldavite has historically been used in tool making, as well as being displayed in pendants and as heads of walking canes in Central Europe.

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 Moldavite

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